石油钻井三牙轮钻头牙爪的轴颈上有一个圆弧滚道和两个外圆滚道(图1),为了保证被雇工件的精度要求和一定的磨削效率,我厂设计了采用成型磨削的专用磨床。磨床所用砂轮是组合成型砂轮(图2)。这种组合成型砂轮采用组合金刚石滚轮(图3)成型修整。但组合金刚石滚轮成型修整存在着如 Oil Drilling Tricone bit claw neck journal has an arcuate raceway and two outer raceway (Figure 1), in order to ensure the accuracy of hired parts and a certain degree of grinding efficiency, I designed the plant Grinding special grinding machine. Grinding machine used grinding wheel is a combination of molding wheel (Figure 2). This combination of molding wheel using a combination of diamond wheel (Figure 3) forming trim. However, there is a combination of diamond wheel shaping trim there